Computed with the same code as the observations under the main chart and in the API (get_insights). Moving together in time does not prove a cause.
How the indicators changed
Fertility (TFR): 3.37 in 1950 → 1.26 in 2025 (−63%). Peak: 3.86 in 1959; the latest value is 67% lower. Thresholds: below 2.1 since 1972, below 1.5 since 2019. The trend broke around 1960 and 1973: +0.05 → −0.17 → −0.01 a year.
Births: 359k in 1950 → 373k in 2025 (+4%). Peak: 464k in 1959; the latest value is 20% lower. The trend broke around 1961 and 1967: +10.1k → −20.7k → +0.28k a year.
Population: 13.7M in 1950 → 39.3M in 2023 (×2.9).
Internet: 0.4% in 1990 → 94.4% in 2024 (+94 pp). Thresholds: above 10% since 1997, above 50% since 2000, above 90% since 2015. Fastest growth in 1996–2001: 6.8% → 60.2%.
Urban share: 69% in 1960 → 82.9% in 2025 (+14 pp). Threshold: above 75% since 1969. The trend broke around 1969 and 1982: +0.76 → −0.02 → +0.17 a year.
GDP per person (PPP): 40,475 PPP dollars in 1990 → 57,990 PPP dollars in 2025 (+43%). Low: 39,023 PPP dollars in 1992; +49% since then. The trend broke around 1996 and 2003: +469 → +1,358 → +321 a year.
GDP growth: on average 2.9% in the 1980s, 2.4% in the 1990s, 2.1% in the 2000s, 2.3% in the 2010s, 1.9% in the 2020s. Lowest: −5% in 2020; highest: 6% in 2021.
Inflation: on average 6.5% in the 1980s, 2.2% in the 1990s, 2.1% in the 2000s, 1.7% in the 2010s, 3.2% in the 2020s. Lowest: 0.2% in 1994; highest: 12.5% in 1981.
What changed at the same time
The fastest decline of "Fertility (TFR)" was in 1962–1972: 3.68 → 1.94. Over the same years: births 453k → 337k; population 18.6M → 22.2M; urban share 70.4% → 76%; no data for the others in those years.
Over the last 10 years (2015–2025): fertility (TFR) 1.60 → 1.26; births 385k → 373k; population 36M (2015); internet 90% → 94.4%; urban share 81.2% → 82.9%; GDP per person (PPP) 55,661 PPP dollars → 57,990 PPP dollars; GDP growth 0.7% → 1.7%; inflation 1.1% → 2.1%.
How the indicators relate
Fertility (TFR) and internet (1990–2024, 35 years): levels are noticeably related, in opposite directions (r = −0.57); year-to-year changes show no reliable link (r = −0.11).
Fertility (TFR) and urban share (1960–2025, 66 years): levels are strongly related, in opposite directions (r = −0.81); year-to-year changes show no reliable link (r = −0.46). This looks like a shared trend: both change over time, but not in step from year to year.
Fertility (TFR) and GDP per person (PPP) (1990–2025, 36 years): levels are noticeably related, in opposite directions (r = −0.62); year-to-year changes show no reliable link (r = 0.10).
Forecasts vs actual
Fertility (TFR): past UN projections. The outcome was below the projection in 12 of 12 revisions (1998–2022) and above in none; median gap −16%.
Fertility (TFR): UN 2024 projection (medium): 2050 — 1.39 (+10% vs 2025), 2100 — 1.49 (+19% vs 2025); low variant for 2100: 0.99.
Births: past UN projections. The outcome was below the projection in 11 of 12 revisions (1998–2022) and above in 1; median gap −6.8%.
National statistics for 2025: 373k, 3% above the UN 2024 medium variant (361k).
Births: UN 2024 projection (medium): 2050 — 380k (+2% vs 2025), 2100 — 452k (+21% vs 2025); low variant for 2100: 207k.
Population: past UN projections. The outcome was below the projection in 0 of 12 revisions (1998–2022) and above in 12; median gap +3.3%.
The UN 2000 projection expected today's level (39.3M, 2023) only around 2042: reality is 19 years ahead of it.
The UN 2022 projection expected today's level (39.3M, 2023) only around 2025: reality is 2 years ahead of it.
Population: UN 2024 projection (medium): 2050 — 45.6M (+16% vs 2023), 2100 — 53.6M (+36% vs 2023); low variant for 2100: 40.6M.
GDP growth: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 0.6 pp below the forecast; below it in 53% of cases; typical error ±1.3 pp. The biggest miss was for 2020: IMF, April 2019 expected 1.9%, the outcome was −5%.
GDP growth: latest IMF forecast (IMF, April 2026): 2026 — 1.5%, 2028 — 1.7%, 2031 — 1.8%.
Inflation: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 0.2 pp above the forecast; below it in 50% of cases; typical error ±0.9 pp. The biggest miss was for 2022: IMF, April 2021 expected 2%, the outcome was 6.8%.
Inflation: latest IMF forecast (IMF, April 2026): 2026 — 2.5%, 2028 — 2%, 2031 — 2%.
UN projections vs actual
Solid line: actual data, UN WPP 2024 estimates to 2023, then national statistics where comparable with the UN. Dashed: medium variants of past UN revisions. The table shows what each revision expected for the latest year (or five-year period) with actual data.
Population
persons, 1 July
Actual
UN 1998
UN 2000
UN 2002
UN 2004
UN 2006
UN 2008
UN 2010
UN 2012
UN 2015
UN 2017
UN 2019
UN 2022
UN 2024, medium
Release
Target period
Horizon
Expected
Actual
Actual vs expected
UN 1998
2023
25 years
37.4M
39.3M
+5.1%
UN 2000
2023
23 years
36.3M
39.3M
+8.3%
UN 2002
2023
21 years
35.8M
39.3M
+9.9%
UN 2004
2023
19 years
37.3M
39.3M
+5.5%
UN 2006
2023
17 years
37.4M
39.3M
+5.1%
UN 2008
2023
15 years
38M
39.3M
+3.3%
UN 2010
2023
13 years
38M
39.3M
+3.3%
UN 2012
2023
11 years
38.6M
39.3M
+1.9%
UN 2015
2023
8 years
38.5M
39.3M
+2.1%
UN 2017
2023
6 years
38.6M
39.3M
+1.9%
UN 2019
2023
4 years
38.7M
39.3M
+1.5%
UN 2022
2023
1 year
38.8M
39.3M
+1.3%
Births
births per year
Actual
UN 1998
UN 2000
UN 2002
UN 2004
UN 2006
UN 2008
UN 2010
UN 2012
UN 2015
UN 2017
UN 2019
UN 2022
UN 2024, medium
Release
Target period
Horizon
Expected
Actual
Actual vs expected
UN 1998
2020–2025
24 years
424k
363k
−14.5%
UN 2000
2020–2025
22 years
389k
363k
−6.7%
UN 2002
2020–2025
20 years
353k
363k
+3%
UN 2004
2020–2025
18 years
386k
363k
−5.9%
UN 2006
2020–2025
16 years
378k
363k
−4.1%
UN 2008
2020–2025
14 years
413k
363k
−12%
UN 2010
2020–2025
12 years
421k
363k
−13.8%
UN 2012
2020–2025
10 years
425k
363k
−14.7%
UN 2015
2020–2025
8 years
390k
363k
−6.9%
UN 2017
2020–2025
6 years
392k
363k
−7.4%
UN 2019
2020–2025
4 years
388k
363k
−6.5%
UN 2022
2025
3 years
387k
373k
−3.8%
Total fertility rate
children per woman
Actual
UN 1998
UN 2000
UN 2002
UN 2004
UN 2006
UN 2008
UN 2010
UN 2012
UN 2015
UN 2017
UN 2019
UN 2022
UN 2024, medium
Release
Target period
Horizon
Expected
Actual
Actual vs expected
UN 1998
2020–2025
24 years
1.86
1.35
−27.3%
UN 2000
2020–2025
22 years
1.74
1.35
−22.4%
UN 2002
2020–2025
20 years
1.55
1.35
−12.8%
UN 2004
2020–2025
18 years
1.61
1.35
−16.4%
UN 2006
2020–2025
16 years
1.60
1.35
−15.8%
UN 2008
2020–2025
14 years
1.72
1.35
−21.4%
UN 2010
2020–2025
12 years
1.76
1.35
−23.5%
UN 2012
2020–2025
10 years
1.74
1.35
−22.4%
UN 2015
2020–2025
8 years
1.56
1.35
−13.3%
UN 2017
2020–2025
6 years
1.56
1.35
−13.4%
UN 2019
2020–2025
4 years
1.48
1.35
−9.1%
UN 2022
2025
3 years
1.48
1.26
−14.9%
IMF forecasts vs actual
Solid line: actual values from the latest IMF edition (data get revised, so we use the newest). Dashed: April editions, current year and five years ahead. The table covers next-year forecasts from all editions: mean error shows bias, mean absolute error shows accuracy.
Real GDP growth
% per year
Actual (IMF)
WEO, April editions
Indicator
Forecasts
Mean error
Mean absolute error
Actual below forecast
Real GDP growth
36
−0.6 pp
1.3 pp
53%
Inflation
36
+0.2 pp
0.9 pp
50%
Unemployment rate
36
+0.2 pp
0.7 pp
47%
Government gross debt
27
+5.2 pp
6.1 pp
15%
All indicators
Demography
Population
39.3M persons, 1 July latest value, 2023
Population on 1 July. UN estimate to 2023, medium variant from 2024; past UN revisions for forecast checks.